The 6.9 is designed to make the WASZP an easier boat sail. It is suited for the lighter sailor or those sailing mainly high winds. Or if you just want an easier experience and don't mind being not quite as fast as the 8.2 in the lighter winds. The X-ply body reduces weight and provides excellent stretch resistance and toughness. Includes tapered rod battens, with micro adjust batten tensioners and camber inducers. Please note you will require the matching Mast bottom section for the 6.9 sail if you have a mast for another sized sail.